/Engine/Source/Runtime/InteractiveToolsFramework/Public/BaseBehaviors/InputBehaviorModifierStates.h
Look up the current state of each registered modifier and pass to the target
void UpdateModifiers ( const [FInputDeviceState](API\Runtime\InteractiveToolsFramework\FInputDeviceState) & Input, [IModifierToggleBehaviorTarget](API\Runtime\InteractiveToolsFramework\BaseBehaviors\IModifierToggleBehaviorTarget) * ModifiersTarget ) const